Vertical axis wind sail



FIG. 1 is a perspective view of the vertical axis wind sail of my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in FIGS. 1–7 represent the environment in which the design resides and forms no part of the claim. 

The ornamental design for a vertical axis wind sail, as shown and described. 